Integrated Heating Wires for Low-Temperature LCD Performance
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Solution Overview
Problem
Liquid crystal displays experience increased response time and deteriorated display quality at low temperatures, leading to issues like tailing and smearing of dynamic images, and can even result in a loss of liquid crystal state and screen failure below −30° C.
Innovation Solution
A display panel design that incorporates heating wires arranged within the display area, connected to voltage terminals through heating buses, allowing for localized heating of the liquid crystal molecules to maintain optimal performance in low-temperature environments.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heater is configured to heat the liquid crystal screen, then the display quality is maintained at low temperatures, but the thickness of the liquid crystal display assembly is increased and structural complexity is increased
Solution Approach 1:
The heating function is merged with the liquid crystal display assembly by integrating heating wires directly into the display panel structure. The heating wires are arranged in the display area and connected through heating buses to voltage terminals, combining the heating function with the display function in a single integrated structure, thereby avoiding increased structural complexity while maintaining display quality at low temperatures
Solution Approach 2:
The heating wires are arranged within the display panel itself, allowing the display panel to heat itself from the inside. This self-heating mechanism eliminates the need for external heaters, simplifying the overall structure while ensuring reliable operation at low temperatures
2Speed
If a heater is configured to heat the liquid crystal screen, then the response time of liquid crystal is maintained at low temperatures, but the thickness of the liquid crystal display assembly is increased
Solution Approach 1:
The heating function is merged within the display panel structure itself, with heating wires arranged in the display area and connected through heating buses. This integration eliminates the need for external heaters that would increase thickness, while still providing effective heating to maintain liquid crystal response time at low temperatures
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution effectively maintains display quality by heating the liquid crystal molecules, preventing issues like tailing and smearing, and ensuring the liquid crystal state remains functional even at low temperatures, thus simplifying the structure and reducing costs compared to external heating solutions.
Implementation Method 1
A display panel design that incorporates heating wires arranged within the display area, connected to voltage terminals through heating buses, allowing for localized heating of the liquid crystal molecules
Data Source
AI summary
A display panel includes a display area, a non-display area at least partially surrounding the display area, a plurality of heating wires, a first voltage terminal, and a second voltage terminal. The plurality of heating wires are arranged in the display area. The plurality of heating wires extend along a first direction and are arranged along a second direction. The first direction intersects with the second direction. Each heating wire of the plurality of heating wires includes a first signal end and a second signal end. The first signal end and the second signal end of the same heating wire are arranged on a first side of the display area along the first direction. The first voltage terminal and the second voltage terminal are arranged in the non-display area.